Metallic and insulating interfaces of amorphous SrTiO3-based oxide heterostructures

Autor:	Chen, Yunzhong, Pryds, Nini, Kleibeuker, Josee E., Koster, Gertjan, Sun, Jirong, Stamate, Eugen, Shen, Baogen, Rijnders, Guus, Linderoth, S.
Rok vydání:	2012
Předmět:	Condensed Matter - Materials Science
Zdroj:	Nano letters, Nano. Lett. 11, 3774 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1021/nl201821j
Popis:	The conductance confined at the interface of complex oxide heterostructures provides new opportunities to explore nanoelectronic as well as nanoionic devices. Herein we show that metallic interfaces can be realized in SrTiO3-based heterostructures with various insulating overlayers of amorphous LaAlO3, SrTiO3 and yttria-stabilized zirconia films. On the other hand, samples of amorphous La7/8Sr1/8MnO3 films on SrTiO3 substrates remain insulating. The interfacial conductivity results from the formation of oxygen vacancies near the interface, suggesting that the redox reactions on the surface of SrTiO3 substrates play an important role. Comment: 17 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1212.6901 Zobrazit plný text záznamu View this record from Arxiv